Tunable Kernel Parameters
Table Of Contents
- Tunable Kernel Parameters
- Legal Notices
- Revision History
- Conventions
- 1 Overview
- 2 Accounting Subsystem
- 3 Asynchronous I/O Subsystem
- 4 File System Subsystem
- 5 Interprocess Communication (IPC) Subsystem
- 6 Kernel Crash Dump Subsystem
- 7 Memory Paging Subsystem
- 8 Process Management Subsystem
- 9 Spinlock Pool
- 10 Streams Subsystem
- 11 Miscellaneous Parameters
- Miscellaneous Parameter Summary
- CD-ROM Parameter Summary
- System Clock Parameter Summary
- Disk I/O Parameter Summary
- Intrusion Detection System/9000
- Fast Symbolic Link Traversal Parameter Summary
- Reserved System Memory Parameter Summary
- Network Parameter Summary
- Queued Signals Parameter Summary
- Real-Time Priority Parameter Summary
- Terminal Parameter Summary
- Maximum Users Parameter Summary
- Web Server Parameter Summary
- Miscellaneous Parameter Summary
- A Table of Tunable Kernel Parameters
Streams Subsystem
Streams Parameter Summary
Chapter 10
58
Streams Parameter Summary
The following configurable kernel parameters are used for managing resources used by
character-mode I/O streams.
See also:
• “Overview of Streams Kernel Parameters” on page 59
• “How to Specify Configurable Parameter Values” on page 13
• STREAMS/UX for the HP 9000 Reference Manual
Streams NSTREVENT Maximum number of outstanding streams bufcalls that
are allowed to exist at any given time on the system. This
number should be equal to or greater than the maximum
bufcalls that can be generated by the combined total
modules pushed onto any given stream, and serves to limit
run-away bufcalls. Manpage: nstrevent (5).
Streams nstrpty System-wide maximum number of streams-based
pseudo-ttys that are allowed on the system. Manpage:
nstrpty (5).
Streams NSTRPUSH Maximum number of streams modules that are allowed to
exist in any single stream at any one time on the system.
This provides a mechanism for preventing a software
defect from attempting to push too many modules onto a
stream, but it is not intended as adequate protection
against malicious use of streams. Manpage: nstrpush (5).
Streams NSTRSCHED Maximum number of streams scheduler daemons that are
allowed to run at any given time on the system. This value
is related to the number of processors installed in the
system. Manpage: nstrsched (5).
Streams STRCTLSZ Maximum number of control bytes allowed in the control
portion of any streams message on the system. Manpage:
strctlsz (5).
Streams streampipes Force all pipes to be streams-based. Manpage: streampipes
(5).
Streams STRMSGSZ Maximum number of bytes that can be placed in the data
portion of any streams message on the system. Manpage:
strmsgsz (5).